The Polar Vantage M3 has premium guts in a mid-range package — with one key flaw

The new Polar Vantage M3 is an intriguing mid-range running watch; I put its GPS and HR accuracy to the test against Garmin and COROS.

source https://www.androidcentral.com/wearables/polar-vantage-m3-gps-hr-accuracy-test